The 45 equal division of 3, the tritave, divides it into 45 equal parts of 42.266 cents each, corresponding to 28.392 edo. It makes for a strong 17-limit no-twos system, particularly with respect to the tuning of 5, 13, and 17. It tempers out 3125/3087 in the 7-limit, 891/875 and 2475/2401 in the 11-limit, 275/273, 351/343, 847/845 and 2197/2187 in the 13-limit, and 121/119, 459/455 and 2025/2023 in the 17-limit. It is the tenth no-twos zeta peak edt.

Intervals of 45edt

Degrees	Cents	Approximate Ratios
0	0	1/1
1	42.266
2	84.531
3	126.797	14/13, 15/14, 16/15, 29/27
4	169.063
5	211.328	9/8
6	253.594	15/13
7	295.860
8	338.125
9	380.391	5/4
10	422.657
11	464.922	13/10
12	507.188	4/3
13	549.454
14	591.719	7/5
15	633.985	13/9
16	676.251
17	718.516
18	760.782	14/9
19	803.048	8/5
20	845.313
21	887.579	5/3
22	929.845	12/7
23	972.110	7/4
24	1014.376	9/5
25	1056.642
26	1098.907	17/9
27	1141.173	27/14
28	1183.439
29	1225.704
30	1267.970	27/13
31	1310.236
32	1352.501
33	1394.767	9/4 (9/8 plus an octave)
34	1437.033	16/7
35	1479.298
36	1521.564	12/5 (6/5 plus an octave)
37	1563.830
38	1606.095
39	1648.361	13/5 (13/10 plus an octave)
40	1690.627	8/3
41	1732.892
42	1775.158	14/5 (7/5 plus an octave)
43	1817.424	20/7
44	1859.689
45	1901.955	3/1